New carbon capture method turns up the heat
cosmosmagazine.com
A centuries-old technique for making cement may be the key to large-scale carbon capture, according to US chemists.

It is estimated that 4 billion tons of cement are manufactured each year. To speed up CO2 uptake, “instead of mixing calcium oxide with sand, they mixed calcium oxide with another mineral composed of magnesium and silicate ions. The heat catalysed an exchange of ions, forming magnesium oxide and calcium silicate: alkaline minerals that react quickly with acidic CO2 in the atmosphere.” Far quicker than most concrete, anyway…